Which sentence contains a punctuation error? A. You need two thirds cup of flour. B. Add three quarters of a teaspoon of almond extract. C. When the cookies are done, they will be a golden-brown color. D. Oh, what a sweet-smelling batter this is!
"B. Add three quarters of a teaspoon of almond extract" is the only sentence that has an error in punctuation since there should be a hyphen between "three" and "quarters".
